Improvement in water-heaters for green-houses



1. A. scoLLAY.

Improvement in Water-Heaters for Green-Houses, &c

Patented Sep. 17, 1872.

Nuenen 'PATENT Grrrcn.

JOHN A. SOOILAY, OF BROOKLYN, NEW YORK.

iMPROVEMENT IN WATER-HEATERS FOR GREEN-HOUSES, &c.

To all whom it may concern:

Beit known that I, J OHN A. ScoLLAY, of Brooklyn, Kings county, NewYork, have invented certain Improvements relating to W ater-Heaters, ofwhich the following is a speciiication:

The device is intended more particularly for heating water for warminggreen-houses and analogous purposes 5 but it may be used with successfor other purposes.

It will be understood as incased in a waterjaeket or brick-work, withthe fire on a grate below, and the heated products of combustion passingthrough it, and also through a narrow space between it and thesurrounding waterjacket or brick-work.

It is capable of being constructed entirelyT by coring. lt is strong,and presents an unusually liberal surface for the absorption of the heatfrom the gases, and allows for any amount of expansion and contractionof either the side exposed to the iire or the one exposed totheflue-heat.

The accompanying drawing forms a part of this specification.

Figure l is a vertical section through the heater and connected pipe;and Fig. 2 is a plan view of the same viewed from below.

Similarletters of reference iudicatelike parts in both the figures.

The entire heater is formed of cast-iron in a single piece. Iwilldesignate the main body by the single letter A, using the letters0.1 a2,

`85e., to designate certain parts thereof. B1 B2 indicate certainprojecting parts, and O certain iiues cast therewith. D is a pipesecured around the hole on the upper side by bolts, not represented. Thelower face of the main body is formed with circular corrugations, al a2,8m. These corrugations allow this face of the casting to expand andcontract indefinitely withoutserious strain. The lower surface of thebottom is thickly studded with slightlytaperedv projections, marked B1.The edges or vertical sides of the casting are formed with verticalflanges or wings, marked B2. B3 are radial or nearly radial ribs orflanges extending across the lower face of the heater. They perform thedouble functions of aiding to absorb heat and strengthening the lowerface of the casting. All the re-entering angles should be rounded toreduce the danger of cracking, as will be understood by founders. Thepipe D being tightly tted with a rust-joint or otherwise, and the wholebeing mounted in a water-jacket or brick-work, not represented, theradiant heat, as also the heat derived from convection, is rapidlytransmitted to the water within the heater, and the effect is increasedby the projections B1 and the anges B2, while the entire structure maychange its form by the expansion and contraction of the corrugated lowerside, as also the beveled upper side, to conform to the varyingtemperatures.

The construction avoids much of the danger of cracking and distortionexperienced with the ordinary forms, and the heating is more eiiicientwith a given amount of fuel than any other form of heater within myknowledge. It gives a free and quick circulation to the water, andexperiment indicates that the heating efficiency as compared with thebest ordinary heater, is as one hundred and twentyeight to one hundred.

I claim as my invention- The heater herein described as a new article ofmanufacture, the same being formed in one Vpiece with flucs, wings,projections, and corrugations, as shown, and adapted to be secured tothe connection D, and to serve therewith within the surroundingwater-jacket or brick-work, as herein specified.

In testimony whereof I have hereunto set my hand this 26th day of June,1872, in the presence of two subscribing witnesses.

JOHN A. SOOLLAY.

Witnesses .Wir C. DEY, ARNOLD HRMANN.

